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CSP2026

Flowmaster 818112 - Outlaw Series™ Cat Back Exhaust System

Flowmaster  |  SKU: FLO-818112
Sale price $1,04995 Regular price $1,18195

PLEASE NOTE: Pictures may be representative of style, rather than the actual product. Read the description for more details.

Description

Flowmaster 818112 - Outlaw Series™ Cat Back Exhaust System

Flowmaster Outlaw Cat-Back Exhaust System

Fits 2020-2026 GM Silverado/Sierra 2500HD/3500HD 6.6L Gas V8, Outlaw Series, 3.50" to Dual 3.00" Cat-Back, Dual Rear Exit, Stainless Steel Exhaust System

This Flowmaster(R) Outlaw(R) Cat-back exhaust system for the 2020-2022 Chevy Silverado and GMC Sierra 2500HD/3500HD trucks with the 6.6L gas engine, is perfect if you are looking for an aggressive sound level inside and outside of the truck, with all of the performance benefits that you would expect from Flowmaster(R). Maximum increases of up to 9 hp and 9 lb. Ft. over the stock exhaust at the rear wheels. Designed for the Crew Cab, Standard Bed (6.5 ft.) models only, this bolt-on, emissions-legal system features a stainless steel Outlaw series muffler and large dual 3.00-inch 409 stainless steel mandrel-bent tailpipes that can be configured to exit either dual straight out the back, or dual out the sides behind the rear wheels which is best suited for towing applications. The system is finished off with polished 4.00-inch stainless steel tips and is covered by our Lifetime Limited Warranty. Designed for an easy fit, this system includes all necessary parts and hardware for installation.

  • Max increases of up to 9 hp and 9 lb.ft. over the stock exhaust at the rear wheels
  • 3.50-inch and 3.00-inch mandrel bent 16-gauge 409 stainless steel tubing maximizes exhaust flow and improves durability
  • Dual 4.00-inch polished stainless steel tips add a custom look
  • Includes complete hardware and factory styled hangers in the stock locations for an easy installation
  • Super 10 Series performance muffler delivers a deep, aggressive performance tone and improves exhaust flow
  • Backed by Flowmaster’s Lifetime Limited Warranty
  • Can be configured to exit straight out the rear or out the side depending on preference
Brand: Flowmaster
CARB (California) Compliant: Yes
Catalytic Converter Included: No
Catalytic Converter Quantity: 0
Category: Exhaust
Clamping Type: Flat Band
Clamps Included: Yes
Emission Code: 5
Exhaust Series: Outlaw
Exhaust Tip Color: Silver
Exhaust Tip Connection: Clamp-On
Exhaust Tip Cut: Angled
Exhaust Tip Diameter: 4.00
Exhaust Tip Edge: Angle Cut
Exhaust Tip Finish: Polished
Exhaust Tip Intercooled: No
Exhaust Tip Length: 13.00
Exhaust Tip Material: 304 Stainless Steel
Exhaust Tip Quantity: 2
Exhaust Tip Resonated: No
Exhaust Tip Shape: Round
Exhaust Tip Wall: Double Wall
Exit Style: Dual Out Side
Exit Style: Dual Out Rear
Finish: Natural
Gasket Or Seal Included: No
Grade Type: Performance
Hangers Included: Yes
Inlet Diameter: 3.50
Inlet Type: Flanged
Main Piping Diameter: 3.00
Mount Type: Uses Factory Hangers
Mounting Bracket Included: Yes
Muffler Body Height: 4.00
Muffler Body Length: 6.50
Muffler Body Material: 409 Stainless Steel
Muffler Body Shape: Oval
Muffler Body Width: 9.50
Muffler Color: Black
Muffler Finish: Black High-Temperature Paint Finish
Muffler Flanged Inlet: No
Muffler Flanged Outlet: No
Muffler Included: Yes
Muffler Inlet Connection: Slip-Fit
Muffler Inlet Inside Diameter: 3.50
Muffler Inlet Location: Center
Muffler Inlet Outside Diameter: 3.63
Muffler Outlet Connection: Slip-Fit
Muffler Outlet Diameter: 3.00
Muffler Outlet Location: Dual
Muffler Outlet Quantity: 2
Muffler Overall Length: 12.375
Muffler Part Number: Kit Only
Muffler Quantity: 1
Muffler Series: 10 Series
Muffler Type: Chambered
part type: Exhaust System
Pipe Color: Silver
Pipe Material: 409 Stainless Steel
Product Type: Exhaust System
Sound Level: Aggressive
Spring Bolt Kit Included: No
Sub Category: Exhaust and Tail Pipes
Tail Pipe Outlet Outside Diameter: 3.00
Tail Pipe Quantity: 2
Tail Pipe Quantity: Dual
Tail Pipe Tapered Outlet: No
Tip Logo: Embossed
Type: Cat-Back
Valve Included: No
Valve Type: Not Applicable
Warning: California Proposition 65

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